Attachment for spark-coils.



0. H. THORDARSON..

ATTACHMENT FOR SPARK SOILS.

APPLICATION FILED JUNE 29, 1908.

Patented Nov. 5, 1912.

2 SHEETS-SHEET l I 5 in: v\ W I'll. 5 A Q3 I ||1 b I k% I III K m Q N% w .N\ 1} \v G. HVTHORDARSON. ATTACHMENT FOR SPARK COILS. APPLICATION FILED JUNE 29, 1908.

1,043,274. Patented Nov. 5, 1912.

2 SHEETS-*SHBET 2.

X72: mw E6- COLUMBIA PLANOGRAPh CO.,'WASHINGTON, D- C CHESTER H. THORDARSON, OF CHICAGO, ILLINOIS.

ATTACHMENT FOR SPARK-COILS.

Specification of Letters latent.

Patented Nov. 5, 1912.

Application filed June 29, 1908. Serial No. 440.845.

To all whom it may concern:

Be it known that I, CHESTER H. THOBDAR- son, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have made a certain new and useful Invention in Attachments for Spark-Coils, of which the following is a specification.

The invention relates to spark coils and molre particularly to attachments for spark 001 s.

The object of the invention is to provide an attachment which may be readily applied to and removed from the casing or other convenient part of a spark coil, and which attachment carries the vibrator for making and breaking the circuit of the coil.

A further object is to provide means whereby the vibrator for spark coils may be quickly removed from the coil for repair or replacement without disturbing any of the other parts of the coil thereby enabling repairs to be made to the vibrators of individual units of a bank of coils without removal of such unit from the bank.

A further object is to provide a vibrator attachment for spark coils which is simple in construction and economical to manufacture.

()ther objects of the invention will appear more fully hereinafter.

The invent-ion consists substantially in the construction, combination, location and relative arrangement of parts, all as will be more fully hereinafter set forth, as shown in the accompanying drawings and finally pointed out in the appended claims.

Referring to the accompanying drawings, and to the various views and reference signs appearing thereon. Figure 1. is a view in end elevation of a spark coil showing the application thereto of a removable viirator attachment constructed in accordance with my invention. Fig. 2 is a broken View in central longitudinal section. Fig. 3 is an enlarged central longitudinal section, on the line 3, 3, Fig. 1, of the removable vibrator attachment. Fig. 4 is an end view of the construction shown in Fig. 3. Fig. 5 is a view in transverse section on the line 5, 5, Fig. 1. Fig. 6 is a fragmentary view of the end plate or cap of the coil casing showing means for receiving and retaining the removable vibrator attachment. Fig. 7 is an attached detail View in perspective of an angle plate employed in connection with my invention.

The same part is designated by the same reference sign wherever it occurs throughout the several views.

In the use of spark coils it frequently becomes necessary and advisable to repair or replace the parts which constitute the vibrator or circuit breaker, as these are the parts which are most liable to burn or to wear out or get out of order. The parts of the coil itself are not so delicate and hence require but very little attention or care for repair or.

replacement of parts thereof. In order to efiect a repair or renewal of the parts of the vibrator or circuit interrupter it has heretofore been necessary to remove the entire coil and its casing. This is undesirable, especially where the coil forms an individual unit in a bank of coils. It is among the special purposes of my present invention to provide an attachment which carries the vibrator or circuit interrupter and which can be readily removed from or replaced in operative position with reference to the coil or its casing. By thus providing the vibrator or interrupter mechanism in the form of a separate attachment, and means by which such attachment can be readily and quickly applied to and removed from the coil casing, it will be seen that I am enabled to remove the attachment for repair or replacement of any of its parts without deranging the coil or without removing the coil as a unit in the bank of coils. It will also be seen that the vibrator mechanisms or attachments can be readily carried in stock or as spare parts and when the necessity arises for immediate repair or replacement the defective attachment may be removed and a new one applied in its place, leaving the removed defective attachment to be repaired at leisure or returned to the shop.

The construction of the coil and its casing, except as hereinafter noted, in the details thereof forms no part of my present invention. I have shown the invention ap plied to the form of coil and casing as disclosed in my Patent No. 899,634, dated Sept. 29, 1908, and wherein the coils 7, 8 the magnet 9, and core 10, are suitably arranged, located and insulated wholly within the casing 11. It is obvious that other forms, constructions and arrangements are equally well adapted for use in connection with my inl vention. insulation 39 being placed over the plate 38, The top or cover or other convenient part and held in place by the strip 40, the edges a J V. O of the coil casing, indicated at 12, is termed ot tne insulatingsheet 09, being bent do n mounted on the clamp bolt 33, a sheet of 5 or provided with an upturned lip 13, at or over depending flanges of the contact strip adjacent one end thereof, while at or adja 37, to attord etlicient insulation thereto! cent the other end thereof, said top or corer from the attachment supporting plate 25. is provided, with an opening therethrough, From the foregoing description it will be indicated at 1st, which is covered by insulatseen that all. the parts carried, held or ing sheets of mica, or other suit-able maclamped by the clamp bolt 33. are supported tcrial, indicated at 15, 16, applied to the upon but insulated from the attachment under as well as the upper sides rcspccsupporting plate 25. tively, of such top or cover. On the under The upturned flange 22, is provided with side of the insulating sheet is applied a an opening therein designed to snap over a 15 conducting plate 17, and to the upper side shoulder or projection 11, formed in the up of insulating sheet 16 is applied a comluctturned flange 12, of clamp plate 38, so that ing plate 18. The conducting plates 1?, 18, by deflecting the flange 22, until said shoulare in electrical contact with each other, as der or projection i1, is disengaged, the enfor instance by means of lips 19, formed on tire attachment plate, with all the parts cargo the edges of the plate 18, which lips are ried thereby, may be readily detached and bent down and pass through the opening 11-, remcred by simply disengaging the tongues and through the insulating sheets 15, 16, 2(5 and 13, and a new attachment plate with and engage underneath the conductingplate its associated parts applied by engaging the 17'. clearly shown. The plate 17, may be tongue 26. thereof underneath the tongue 13.

further retained by lips 20, bent down from at one end of said plate, and then depressing the body of the top or coycr 12, and cngagthe ether end until the shoulder all, snaps ing on opposite sides of the plate 17, the into engagement with the flange 22. insulating sheet 15, having its edges turned Coiiperating with the contact strip 37, is a down between the lips 20, and the edges of terminal screw 13, against which said strip plate 17, to etliciently insulate said plate normally bears and makes electrical cont'rom the top or casing. t tlimilarly, the top tact, and which is designed to receive the or casing 12, is pro ided with an upturned circuit wire connection. This screw is carflange 21, against which bears the upturned ried by an overhanging flange 44-, of the atpcrtion 22 of plate 18, which is in the form tachinent plate 25. The armature 28, s

of an angle plate, the insulating sheet 16 provided with an overturned lip all"), underbeing upturned at its end, as at 23, to insuneath which the free end of contact strip 37, late the flange 22, from lip 21. lhe conducworks, and an adjustable screw =l6, serves to tor plate 17. is provided with a depending term a limit stop to regulate the limit of projection or linger 2st, to afford means for vibratory increment of the armature in one ettecting electrical connection with the cirdirection. said limit screw being carried by cuit terminal of the magnet coils. the overhanging portion llr, of the body The removable circuit breaker or vibrator plate 25. attachment includes a frame plate 2?, hav- W'hen the removable attaclnnent is aping at one end a downward lip 26, adapted plied in position for use the contact plate 45 to removably or detachably engage under 31. of the attachment bears directly upon the upturned lip 13, of the top or casing 12. the contact plate 18, carried by the top or The frame plate is cut out centrally, as casing 12, and, which, as above explained, is indicated at 27, Fig: 1, to accommodate the in circuit connection with the magnet coils. vibrating armature 28. This armature is If desired the contacting points or screw supported by a spring plate 29, in any suit- 43, and strip 37. may be of platinum, or able manner, as, for instance by means of other suitable material, as indicated at; 50. tongues 30, bent up from the armature and The operation is very simple. hen curclenched to the spring plate 29, as clearly rent is supplied to the contactscrew 13, it shown in Fig. 3. The armature supporting flow t Spring 37, d th th h the spring plate 29, is clamped and held at one various contact and clamping plates, or end between clamp plates 31, mounted c ew 33, to onta t late 18. and lug 24, to upona clamp bolt 33. This clamp bolt passes and through the magnet coils, thereby enthrough an upturned flange 3%. of the atergizing the magnets and causing the armatachment plate 25, but is insulated thereture 28, to be attracted, and hence, by reason from, being screwed into a plate 35, placed of the finger 45, engaging over the end of on the upper side of the flange 3%, with an strip 37, causing said strip to be drawn away interposed insulating sheet 36, therebefrom the contact screw 4-3, thereby breaking tween. A spring contact strip 3?, is clamped the circuit. Thereupon the spring support and held at one end between the clamp of the strip 37, and of the armature 28, the

plate 32, and an overlying plate 38, which is l latter being no longer attracted since the circuit is broken and the magnets deenergized, rock back again into position for the spring 37, to again contact with screw 43, thereby reestablishing the circuit and again energizing the magnet and attracting the armature.

Since the parts constituting the magnet and its coils are of permanent structure they seldom if ever require renewal or replacement, but the parts of the vibrator or circuit breaker are more delicate and hence repairs thereto and renewals or replacements thereof are frequently required. With the construction and arrangement above described such renewals, replacements and repairs may be readily and quickly effected by simply removing the attachment plate, and with it the parts carried thereby, and substituting a new one in its place thereby enabling the defective attachment to be returned to the shop and repaired at leisure. Thus it will be seen that such renewals and replacements may be effected in the case of units of banks of coils without requiring the removal of such units from the bank.

It is obvious that many variations and changes in the details of construction and arrangement of parts might readily occur to persons skilled in the art and still fall within the spirit and scope of my invention as defined in the appended claims. I do not desire, therefore, to be limited or restricted to the exact and specific details shown and described. But

Having now set forth the object and nature of my invention, and a construction embodying the principles thereof, what I claim as new and useful and of my own invention, and desire to secure by Letters Patent is 1. In a spark coil, the combination with a magnet and. coils, and an inclosing casing therefor, said casing having a tongue, of a vibratable attachment including a supporting plate arranged to engage beneath said tongue, circuit breaking devices carried by saidplate, and means cooperating with said tongue to retain said plate on the casing on the outside of the latter, said attachment, when applied, being in circuit connection with said coils.

2. The combination with a spark coil having circuit connections and an inclosing casing therefor, said casing having a tongue, of a circuit breaker attachment including a plate, a vibrating contact supported thereon, said plate engaging beneath said tongue, and means cooperating with said tongue to secure said plate to the casing on the outside of the latter, and in circuit connection with the spark coil.

3. The combination with a spark coil and an inclosing casing therefor, said casing having a tongue, of a circuit breaker mecha* nism, a carrier plate therefor, said plate engaging under said tongue and means 00- operating with said tongue and engaging said plate to detachably secure said plate to the casing on the outside thereof, and means for completing circuit connection between the circuit breaker mechanism and the spark coil, when the former is secured in place on the casing.

4. The combination with a spark coil, and a casing therefor, of a circuit breaker mechanism, a carrier plate upon which said mechanism is mounted, a securing tongue and a spring catch carried by the casing and adapted to detachably receive and hold said plate.

5. The combination with a spark coil and a casing therefor, said casing having an engaging tongue and a spring catch, of a circult breaking mechanism, a supporting plate therefor, said plate arranged to be engaged by said tongue and catch whereby it is removably secured to said casing.

6. The combination with a spark coil and a casing, said casing having an engaging tongue and a spring catch, and a contact plate adapted to be connected in circuit with the spark coil, of a circuit breaker mecha nism, a supporting plate therefor, said plate arranged to be engaged by said tongue and catch, whereby said circuit breaker mechanism is detachably held in cooperating elec trical connection with said contact plate.

7. The combination with a spark coil and its casing, said casing having an upturned tongue and a spring catch, of a plate engaged at one end by said tongue and at the other end by said catch whereby said plate is removably secured to said casing, a movable armature carried by said plate, a vibratable cont-act strip also carried by said plate and arranged to be actuated by said armature, a circuit terminal cooperating with said strip, and an adjustable limit stop for said armature.

8. The combination with a spark coil and its casing, said casing having an upturned tongue and a spring catch, of a plate having a tongue to cooperate with the tongue of the casing, said plate having a shoulder or projection adapted to be detachably engaged by said spring catch, and a circuit breaker mechanism mounted on said plate.

In testimony whereof I have hereunto set my hand in the presence of the subscribing witnesses, on this 25th day of June A. D.,

CHESTER H. THORDARSON. Witnesses:

Rosa B. MALECEK, FRANK H. T. PATTERS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

